The St. Ann MO Police Department is located at 10405 St. Charles Rock Road, call 314-428-6868 to find out about new arrests or outstanding warrants. This is a police jail for housing inmates immediately after their arrest. Local police departments are not built for long-term inmate holding, they are for very short-term stays because there are not enough cells. There are no visits, commissary or phone accounts available to the offenders.
If they are to remain incarcerated, it will be most likely to the St. Louis County Sheriff's nearby facility.